6720622240 has 96 divisors (see below), whose sum is σ = 17696387520. Its totient is φ = 2396934144.

The previous prime is 6720622231. The next prime is 6720622273. The reversal of 6720622240 is 422260276.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13342 + ... + 116701.

It is an arithmetic number, because the mean of its divisors is an integer number (184337370).

Almost surely, 2^6720622240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6720622240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8848193760).

6720622240 is an abundant number, since it is smaller than the sum of its proper divisors (10975765280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6720622240 is a wasteful number, since it uses less digits than its factorization.

6720622240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130094 (or 130086 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 6720622240 is about 81979.4013152084. The cubic root of 6720622240 is about 1887.1358351286.

The spelling of 6720622240 in words is "six billion, seven hundred twenty million, six hundred twenty-two thousand, two hundred forty".